Calculate the Average: Finding Mean of 20, 0, and 7

The average of a set of numbers is found by dividing the sum of the numbers by how many numbers there are.

Let's find the average of the numbers $20$, $0$, and $7$:

• Step 1: Calculate the sum of the numbers:
  $20 + 0 + 7 = 27$.
• Step 2: Count how many numbers there are. Here, we have 3 numbers.
• Step 3: Apply the average formula:
  $\text{Average} = \frac{27}{3}$.
• Step 4: Divide the sum by 3:
  $\frac{27}{3} = 9$.

Therefore, the average of 20, 0, and 7 is $9$.